Elvish Mystic

{T}: Add {G} to your mana pool.

Pithing Needle

As Pithing Needle comes into play, name a card. Activated abilities of sources with the chosen name can't be played unless they're mana abilities.

Steam Vents

Ulamog, the Ceaseless Hunger

Vessel of Nascency

Emrakul, the Promised End

Ishkanah, Grafwidow

Aether Hub

Aetherworks Marvel

Attune with Aether

Botanical Sanctum

Ceremonious Rejection

Harnessed Lightning

Servant of the Conduit

Spirebluff Canal

Whirler Virtuoso

Aethersphere Harvester

Rogue Refiner

Breeding Pool

({T}: Add {G} or {U}.) As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Stomping Ground

({T}: Add {R} or {G}.) As Stomping Ground enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Veil of Summer

Draw a card if an opponent has cast a blue or black spell this turn. Spells you control can't be countered this turn. You and permanents you control gain hexproof from blue and from black until end of turn. (You and they can't be the targets of blue or black spells or abilities your opponents control.)

Emry, Lurker of the Loch

This spell costs {1} less to cast for each artifact you control. When Emry, Lurker of the Loch enters the battlefield, put the top four cards of your library into your graveyard. {T}: Choose target artifact card in your graveyard. You may cast that card this turn. (You still pay its costs. Timing rules still apply.)

Oko, Thief of Crowns

+2: Create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.") +1: Target artifact or creature loses all abilities and becomes a green Elk creature with base power and toughness 3/3. −5: Exchange control of target artifact or creature you control and target creature an opponent controls with power 3 or less.

Island

({T}: Add {U}.)

Mountain

({T}: Add {R}.)

Forest

({T}: Add {G}.)